Perhaps you should try some spelling variations:
"de communication issues" » "de community issues", "de communication india", "de communication united", "mobile communication issues", "online communication issues"
"early cooperation implies" » "early cooperation series", "early cooperation studies", "early cooperation civility", "early operation implies", "early cooperative implies", "energy cooperation implies"
"its colonization failed" » "its colonization still", "its organizations failed", "anti colonization failed", "jews colonization failed", "mars colonization failed"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("de communication issues") or ((("early cooperation implies") or ("its colonization failed"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("de communication issues") OR ((("early cooperation implies") OR ("its colonization failed"))))*.
• Removing quotes may allow a broader search: (( de communication issues ) or ((( early cooperation implies ) or ( its colonization failed ))))*.